toxic - definition and synonyms

 
adjective 

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/ˈtɒksɪk/
  1. 3
    used about a subject on which opinion is so strongly divided that it is hard to have a reasonable discussion about it

    Based on research, we have learned that these are six of the most common toxic subjects for couples.

    the increasingly toxic debate around welfare

derived word

toxicity

 

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/tɒkˈsɪsəti/
noun [uncountable]